C# – C pointers in C#

c++language-implementationpointersstring

Is this function declaration in C#:

void foo(string mystring)

the same as this one in C:

void foo(char *)

i.e. In C#, does the called function receive a pointer behind the scenes?

In this specific instance, it is more like:

void foo(const char *);

.Net strings are immutable and passed by reference. However, in general C# receives a pointer or reference to an object behind the scenes.

What about this:

string tabs = new string('\t', n);

Where n is the number of times you want to repeat the string.

Or better:

static string Tabs(int n)
{
    return new string('\t', n);
}

Really, you just compare the string to whatever you expect to accept as representing true, so you can do this:

s == 'True'

Or to checks against a whole bunch of values:

s.lower() in ['true', '1', 't', 'y', 'yes', 'yeah', 'yup', 'certainly', 'uh-huh']

Be cautious when using the following:

>>> bool("foo")
True
>>> bool("")
False

Empty strings evaluate to False, but everything else evaluates to True. So this should not be used for any kind of parsing purposes.